Respuesta :

arthishop

Answer:

Elga is 27 years old

Step-by-step explanation:

        AGE

Alvin 2x

Elga  x

x+2x = 81

81=3x

81/3=x

x=27

Hope this helps! (:

epicpianosound

Answer:

20.25

Step-by-step explanation:

81 = (x*2)*2

81 ÷2 ÷2 = x

x = 20.25 or 20 and 1/4

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